NASA currently estimates that there are some 21,000 pieces of space junk larger than a softball orbiting the Earth and 500,000 pieces of debris the size of a marble or larger. Since the debris travels at speeds of up to 17,500 mph, they could damage a satellite or spacecraft.

Technological fixes include removing space debris from orbit with nets, harpoons, or lasers. Deorbiting a satellite at the end of its life is a managerial fix. Ultimately, engineering or managerial solutions like these won’t solve the debris problem because they don’t change the incentives for operators.

As of July 2013, estimates of more than 170 million debris smaller than 1 cm (0.4 in), about 670,000 debris 1–10 cm, and approximately 29,000 larger pieces of debris are in orbit. As of July 2016, nearly 18,000 artificial objects are orbiting above Earth, including 1,419 operational satellites.

Here’s an overview of some of the ideas being proposed for cleaning up space debris.

1. Giant Lasers.
2. Space Balloons.
3. Self-Destructing Janitor Satellites.
4. Wall of Water.
5. Space Pods.
6. Tungsten Microdust.
7. Space Garbage Trucks.
8. Recycling Satellites.

If you’ve deleted all the files you don’t need and you’re still receiving the “insufficient storage available” error message, you need to clear out Android’s cache. (If you are running Android Marshmallow or later, go to Settings, Apps, select an app, tap Storage and then choose Clear Cache.)

To find this, open the Settings screen and tap Storage. You can see how much space is used up by apps and their data, by pictures and videos, audio files, downloads, cached data, and miscellaneous other files.

If your C drive is filling up without a reason, it can be due to a malware attack, file system corruption etc. The C drive is usually taken as the System partition on a computer system. Having some free space in your C drive is essential as it is often needed during a Windows update or upgrade.

From Google search: By clearing cache, you remove the temporary files in the cache, but it WON’T delete your other app data like logins, settings, saved games, downloaded photos, conversations. So if you clear the cache of the Gallery or Camera app on your Android phone, you won’t lose any of your photos.

It’s not bad to clear your cached data now and then. Some refer to this data as “junk files,” meaning it just sits and piles up on your device. Clearing the cache helps keep things clean, but don’t rely on it as a solid method for making new space.

Your Android phone’s cache comprises stores of small bits of information that your apps and web browser use to speed up performance. But cached files can become corrupted or overloaded and cause performance issues. Cache needn’t be constantly cleared, but a periodic clean out can be helpful.

The files that are stored there allow your device to access commonly referenced information without having to rebuild it constantly. If you wipe the cache, the system will rebuild those files the next time your phone needs them (just like with app cache).

When you use a browser, like Chrome, it saves some information from websites in its cache and cookies. Clearing them fixes certain problems, like loading or formatting issues on sites.

I will suggest you to clear cached data every week or two, since it has some minor impact on your device if left for long time but by saying that don’t delete it every hour or every time after you use it it is not a good idea.

Can I Permanently Delete My Google Browsing History? Despite the fact that most Google Account users already know how to erase their browsing history, removing your digital footprint is practically impossible, even if you go incognito.

Clearing cached data Cached data is information your apps store to help them boot up more quickly — and thus speed up Android. Cached data should actually make your phone quicker.

Forcing GPU rendering definitely makes sense on devices with a weaker CPU. If your device is anything less than a quad-core, I would recommend you leave it on at all times. But keep in mind that GPU rendering is only efficient with 2d applications.

The more information that is saved in the cache, the slower your computer will be browsing the web. Deleting the cache data helps to troubleshoot, helps to increase the loading time of web pages and increases the performance of your computer. When you delete the stored cache data, the new version can be retrieved.

If your Android is running slow, chances are the issue can be quickly fixed by clearing out excess data stored in your phone’s cache and deleting any unused apps. A slow Android phone may require a system update to get it back up to speed, although older phones may not be able to run the latest software properly.

Phones (and computers) do not slow down ever. Apps (new and older apps with updates) and operating system updates become more demanding in terms of memory and processing power requirements. This gives us the illusion that our phone has slowed down.

There are several reasons why an iPhone, Android, or another smartphone might freeze. The culprit may be a slow processor, insufficient memory, or a lack of storage space. There may be a glitch or a problem with the software or a particular app.